<!DOCTYPE html>  
<html>
    <head>  
        <meta charset="UTF-8">  
        <title>Test WebSocket</title>
        <script type="text/javascript" src="js/jquery-1.11.1.min.js"></script> 
<body>
	<div id="init">
<button onclick="initLine()">建立链接</button>    <br/>
</div>
发送给<input id="to" type="text"/> </br>内容<input id="text" type="text" /><button onclick="send()">Send</button>    <button onclick="closeWebSocket()">Close</button>
<div id="message">
</div>
</body>

<script type="text/javascript">
    var websocket;
    //判断当前浏览器是否支持WebSocket
   /* if('WebSocket' in window){
        websocket = new WebSocket("ws://localhost:8080/websocket");
    }
    else{
        alert('Not support websocket')
    }*/
function initLine(){
	websocket = new WebSocket("ws://192.168.10.45:8080/websocket?userId=1");
	$("#init").hide();
    //连接发生错误的回调方法
    websocket.onerror = function(){
        setMessageInnerHTML("error");
    };

    //连接成功建立的回调方法
    websocket.onopen = function(event){
        setMessageInnerHTML("open");
    }

    //接收到消息的回调方法
    websocket.onmessage = function(event){
        setMessageInnerHTML(event.data);
    }

    //连接关闭的回调方法
    websocket.onclose = function(){
        setMessageInnerHTML("close");
        $("#init").show();
    }

    //监听窗口关闭事件，当窗口关闭时，主动去关闭websocket连接，防止连接还没断开就关闭窗口，server端会抛异常。
    window.onbeforeunload = function(){
        websocket.close();
    }

    //将消息显示在网页上
    function setMessageInnerHTML(innerHTML){
        document.getElementById('message').innerHTML += innerHTML + '<br/>';
    }

    
   }
//关闭连接
    function closeWebSocket(){
        websocket.close();
    }

    //发送消息
    function send(){
    	var to = $("#to").val();
        var message = document.getElementById('text').value;
        websocket.send( "1;"+to+";"+message);
    }
</script>
</html>